Follow these steps:
1. Put the WAD you wish to edit inside the folder named “Tools” and rename it to “in.wad”
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2. Run the unpacker (Desempaquetador) and it will create a folder with the WAD unpacked.
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3. Delete the 00000000.app file and replace it with one from the download. (nes for nes, snes for snes, etc etc)
4. Double click u8extr.exe and point it towards the 00000000.app file in the new folder created by the unpacker. It will create a new folder called 00000000_app_out.
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5. Double click u8extr.exe and point it towards the banner.bin file in the 00000000_app_out folder. It will create a new folder called banner_bin_out.
6. Open tplconv.exe, and click "Read image" (Leer Imagen) and find the image you wish to use for your Virtual Console Banner (IMPORTANT: The image MUST be 256x192 pixels).
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6.1. Now press "Save TPL" (Guardar TPL) and overwrite the file VCPic.tpl located in the Timgad folder which is in the banner_arc_out folder.
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7. Now, open the u8pack.exe and click “Open File” (Abrir archivo). Select the banner.bin file located in “tools”.
7.1. Highlight VCPic.tpl and click "Add File" (Añadir archivo).
7.2. Select the VCPic.tpl changed in step 5.1 and click "Yes" (Sí) to overwrite.
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7.3. Under "U8 type" (Tipo de U8) select "U8 file signed with MD5" (Archivo U8 firmado con MD5).
7.4. Click "Create Archive" (Crear archivo) and overwrite the banner.bin file in the “tools” folder.
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7. Now, delete the “banner.bin” file inside the “tools” folder.
7.1 In the command prompt again, type “gbalzss e banner.arc banner.bin”.
8. Click “Open File” (Abrir archivo), and select 00000000.app in the unpacked WAD folder.
8.1. Highlight banner.bin and click "Add File" (Añadir archivo).
8.2. Select the banner.bin and click "Yes" (Sí) to overwrite.
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8.3. Under "U8 type" (Tipo de U8) select "U8 file with Banner and with MD5" (Archivo U8 con Banner Info con MD5).
8.4. In the “channel name” (Nombre canal) text bars, you can name your channel to what ever you would like. (Do NOT touch the MD5 hash bar).
8.5. Click "Create Archive" (Crear archivo) and overwrite the 00000000.app file in the unpacked WAD folder.
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9. Copy all the FILES (not folders) that are in the unpacked WAD folder (app, cert, tik, TMD, trailer) and paste them into the main folder (tools).
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10. Click the Wad Packer (Empaquetador) and you should get a file called out.wad.
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11. Install it on the Wii through the WAD Manager.